A train is moving at a speed of 50 km/h. How many hours will it take thetrain to travel 600 kilometers

A Formula One race car with mass 770.0 kg is speeding through a course in Monaco and enters a circular turn at 235.0 km/h in the

Marat540 [252]

Answer:

Explanation:

Given

mass of first car $m_1=770 kg$

speed $=235 km/h\approx 65.27 m/s$

radius of first turn=125 m

And Angular momentum is given by =mvr

Angular momentum of first car

$L_1=770\times 65.27\times 125=6282,237.5 N-m/s$

$v_2=190\approx 52.77 m/s$

$r_2=100m$

similarly $L_2=770\times 52.77\times 100=4063290 N-m/s$

$\frac{L_1}{L_2}=\frac{r_1v_1}{r_2v_2}=\frac{125\times 65.27}{100\times 52.77}=1.546$

Thus angular momentum of first car is 1.54 times of second one

4 0

3 years ago

The density of water is 1000kg/m3 and the density of ice is 900kg/m3. When 0.050 m3 of water is frozen, what will be the new vol

Bingel [31]

Sorry if this answer is a bit late...

We know that the volume of the water is 0.5 cube meters.

The density of water is 1.000 g/m^3 (that's the real density of water... maybe typos?)

The density of ice is 0.900 g/m^3 (that's the approximate density of ice)

First, let's multiply the volume of water by the density of the water to get the mass, since we know that the mass does not change with the ice gets frozen.

0.5 * 1.000 = 0.500 g

Now, let's divide that by the density of ice to get the volume of the ice.

0.500 / 0.900 = 5/9 cube meters

≈ 0.556 cube meters.

The volume of the ice is 5/9 or 0.556 cube meters.

Have an awesome day! :)

4 0

3 years ago

The critical angle for refraction from glass to air is 30° and that from water to air is 37°.Find the critical angle for refract

erik [133]

Answer:

Å

1,55

5 400 Å

n

=

193548,4 km/s

1,55